This is a vital text for the history of Irish Christianity. It is unfortunately mis-titled, as it is in fact the Stowe Missal or at least one of the volumes thereof. The print edition shown here is only rarely available in second-hand bookstores and is thus generally available only to those who have access to university libraries. (And not always then!) A first-class resource, in short, and a great gift from the Internet Archive to the fields of Celtic studies, historical theology and liturgical history among others.